FR758347A - Improvement in incandescent lamps - Google Patents

Improvement in incandescent lamps

Info

Publication number
FR758347A
FR758347A FR758347DA FR758347A FR 758347 A FR758347 A FR 758347A FR 758347D A FR758347D A FR 758347DA FR 758347 A FR758347 A FR 758347A
Authority
FR
France
Prior art keywords
improvement
incandescent lamps
incandescent
lamps
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Leo Levy & Alfred Monnier Ets
Original Assignee
Leo Levy & Alfred Monnier Ets
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Leo Levy & Alfred Monnier Ets filed Critical Leo Levy & Alfred Monnier Ets
Application granted granted Critical
Publication of FR758347A publication Critical patent/FR758347A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/28—Envelopes; Vessels
    • H01K1/32—Envelopes; Vessels provided with coatings on the walls; Vessels or coatings thereon characterised by the material thereof
    • H01K1/325—Reflecting coating
FR758347D 1932-10-14 1932-10-14 Improvement in incandescent lamps Expired FR758347A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR758347T 1932-10-14

Publications (1)

Publication Number Publication Date
FR758347A true FR758347A (en) 1934-01-15

Family

ID=9166640

Family Applications (1)

Application Number Title Priority Date Filing Date
FR758347D Expired FR758347A (en) 1932-10-14 1932-10-14 Improvement in incandescent lamps

Country Status (1)

Country Link
FR (1) FR758347A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2510421A (en) * 1944-07-21 1950-06-06 Rygard Sune Ossian Extracting energy waves of certain length from a heated body

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2510421A (en) * 1944-07-21 1950-06-06 Rygard Sune Ossian Extracting energy waves of certain length from a heated body

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